Seiko Cal. 4528 - 677

The Seiko 4528-677 represents an important milestone in Seiko's 1967 lineup. Powered by the 4528 caliber with 23j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-7373659462ed]

Also known as: UFO, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1967

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